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20
Installation
(2) Clearances around the converter
To ensure ease of heat radiation and maintenance, leave at least the shown clearance around the converter. At least the
following clearance are required under the converter as a wiring space, and above the converter as a heat radiation space.
(3) Converter mounting orientation
Mount the converter on a wall as specified. Do not mount it horizontally or any other way.
(4) Above the converter
Heat is blown up from inside the converter by the small fan built in the unit. Any equipment placed above the converter should
be heat resistant.
(5) Arrangement of multiple inverters and converters
(6) Placement of ventilation fan and converter
REMARKS
For replacing the cooling fan of the 160K or higher, 30cm of space is necessary in front of the inverter. Refer to page 141 for fan
replacement.
When installing multiple inverters and converters in the
same enclosure, generally arrange them horizontally as
shown in the right figure (a). When it is inevitable to
arrange them vertically to minimize space, take such
measures as to provide guides since heat from the
bottom converters can increase the temperatures in the
top inverters, causing inverter failures.
When installing multiple inverters and converters, full
caution must be taken not to let the surrounding air
temperature of the converters and inverters exceed the
permissible value. Avoid the temperature to exceed the
value by providing ventilation and increasing the
enclosure size, etc.
Arrangement of multiple inverters and converters
Heat generated in the converter is blown up from the bottom of
the unit as warm air by the cooling fan. When installing a
ventilation fan for that heat, determine the place of ventilation
fan installation after fully considering an air flow. (Air passes
through areas of low resistance. Make an airway and airflow
plates to expose the converter to cool air.)
Placement of ventilation fan and converter
5cm
or more
Clearance (front)Surrounding air temperature and humidity
Measurement
position
Measurement
position
Converter
Leave enough clearance and take
cooling measures.
5cm
5cm
5cm
20cm or more
75K or higher55K or lower
20cm or more
10cm
or more
10cm
or more
10cm
or more
5cm
or more
5cm
or more
Temperature:
-10°C to 50°C
Ambient humidity:
90% RH maximum
Clearance (side)
Converter
Guide Guide
Enclosure Enclosure
Guide
(a) Horizontal arrangement
(b) Vertical arrangement
Converter
Inverter
Inverter
Converter
Inverter
Converter
Converter Converter
<Good example> <Bad example>
HC2.book 20 ページ ２０１２年１１月１９日 月曜日 午前１０時５２分